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Home > Spherical Particles > By Diameter > Microspheres (10-1000um)

Microspheres (10-1000um)

What are microspheres?

We define microspheres as spherical particles greater than 1micron and smaller than 1000micron (or 1mm) in diameter. Microspheres with diameters between 1micron and 10micron are larger than nanospheres, but on the bottom edge of microsphere particle sizes, and, therefore, we put them in their own Fine microspheres category.

What are different grades of microspheres?

We offer microspheres in various grades, defined by their particle size distribution. The tighter the particle size requirements, the more monodisperse the distribution, the smaller the tolerances, the more precise the microspheres, which also typically makes them more expensive. If the particle size distribution is wider, and the tolerances are larger, the diameter of each microsphere might fall into a larger range, which makes the product more economical. We arbitrarily divided microspheres in three grades: Spacer/Calibration/Monodisperse Grade, Classified Grade, and Bulk Grade.

What are spacer microspheres? What are monodisperse microspheres?

Spacer or Calibration grade, also known as Monodisperse Microspheres, is the most precise grade we offer. In this grade of microparticles greater than 95% of individual microspheres have the diameter that falls within the defined particle size (diameter) range. This is the most expensive grade due to the extensive processing time and intensive quality control process involved in manufacturing of this grade of product. Spacer spheres are invaluable for applications where precise bondline thickness and gap control are paramount.

What does "classified microspheres" mean?

Classified grade microspheres means that greater than 90% of microspheres are guaranteed to fall between the lower and upper diameter limits as specified. Most of Cospheric's products are produced in classified grade. It is a happy medium and a compromise between quality and price, for those applications that can tolerate some distribution of diameters. The lower and upper diameter parameters are clearly defined.

What are bulk grade microspheres?

Bulk grades of microspheres have the lowest requirements and typically a much wider range of diameters, which are defined individually for each product and might vary from product to product. This is the most economical option for applications where the exact microsphere diameter is not critical.


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Products 1-50 of 82
Clear Polyethylene Microspheres 0.96g/cc - Various Sizes 100micron to 1700micron (1.7mm)
Product Line: CPMS
Clear Polyethylene Microspheres 0.96g/cc - Various Sizes 1micron to 1um to 1700um (1.7mm)
>90% in particle size range and >90% spherical.
[more info...]
Price: $103.95-$372.75


Solid Soda Lime Glass Microspheres 2.5g/cc<br>Particle Sizes between 1micron and 7.1mm
Product Line: SLGMS
Classified Grades of Soda Lime Solid Glass Microspheres.
>85% spherical >90% in size range. Many particle sizes between 1um and 7.1mm.
[more info...]
Price: $57.75-$261.00


Highly Opaque White Polyethylene Microspheres, Polymer Beads, Particles
Product Line: WPMS
Highly Opaque White Polyethylene Microspheres, Polymer Beads, Particles
Various Sizes 10micron to 1200um (1.2mm) in Diameter
[more info...]
Price: $103.95-$372.75


Large PMMA Spheres and Microspheres - Poly(methyl Methacrylate) Acrylic Spheres
Product Line: PMMAMS-PMPMS-PMMAS
Poly(Methyl Methacrylate) PMMA Acrylic Microspheres and Spheres 1.2g/cc - Classified Grades - Particle Diameters 1um to 3.5mm [more info...]
Price: $112.50-$289.00


Polystyrene Microspheres 1.07g/cc - highly spherical thermoplastic biocompatible microparticles.
Product Line: PSMS
Polystyrene Microspheres 1.07g/cc - highly spherical thermoplastic biocompatible microparticles.
Crosslinked polystyrene, dry powder, stable in the presence of organic solvents.
[more info...]
Price: $261.00


Bulk Grades of Solid Soda Lime Glass Microspheres 2.5g/cc. Optional Fluorochemical and Silane Coatings.<br>Mean Diameters 3-6um, 8-12um, 35-45um, 65-75um.
Product Line: P2000SL
Bulk Grades of Solid Soda Lime Glass Microspheres 2.5g/cc. Optional Fluorochemical and Silane Coatings.
Mean Diameters 3-6um, 8-12um, 35-45um, 65-75um
[more info...]
Price: $52.50-$174.00


Black Paramagnetic Polyethylene Microspheres 10um to 1mm in Diameter<br>Paramagnetic microspheres have the ability to increase their magnetization with an applied magnetic field and decrease their magnetism when the field is removed.
Product Line: BKPMS
Paramagnetic microspheres have the ability to increase their magnetization with an applied magnetic field
and decrease their magnetism when the field is removed.
[more info...]
Price: $103.95-$372.75


Spacer Spheres - Monodisperse Solid Soda Lime Microspheres - Calibration Grade
Product Line: S-SLGMS
Bondline Spacer / Calibration/Monodisperse Grades of Soda Lime Solid Glass Microspheres.
>90% spherical and 95% in size range. Tight particle size ranges between 15micron and 219micron in diameter.
[more info...]
Price: $131.25-$312.50


Fluorescent Green Polyethylene Microspheres Density 1.00g/cc for Flow Visualization and PIV
Product Line: UVPMS-BG-1.00
Fluorescent Green Polyethylene Microspheres Density of 1.00g/cc
Spherical Flourescent Particles for Flow Visualization and PIV
[more info...]
Price: $103.95-$298.50


UVPMS-BG Fluorescent Spectra (Excitation & Emission curves)
Product Line: UVPMS-BG-1.025
Fluorescent Green Polyethylene Microspheres with Density 1.025g/cc
Bright Green Polymer MicroBeads
[more info...]
Price: $103.95-$298.50


Fluorescent Green Polyethylene Microspheres<br>Bright Green Polymer Beads Density 1.015g/cc
Product Line: UVPMS-BG-1.015
Fluorescent Green Polyethylene Microspheres Density 1.015g/cc
Bright Green Polymer Beads Diameter 355micron to 500um (0.5mm)
[more info...]
Price: $103.95


Fluorescent Green Polyethylene Microspheres<br>Bright Green Polymer Beads Density 1.01g/cc
Product Line: UVPMS-BG-1.01
Fluorescent Green Polyethylene Microspheres Density 1.01g/cc
Bright Green Polymer Spheres Diameter 27micron to 425um
[more info...]
Price: $103.95-$215.00


Fluorescent Green Polyethylene Microspheres<br>Bright Green Polymer Beads Density 1.02g/cc
Product Line: UVPMS-BG-1.02
Fluorescent Green Polyethylene Microspheres Density 1.02g/cc
Bright Green Polymer Spheres or Beads
[more info...]
Price: $103.95


Fluorescent Green Polyethylene Microspheres Density 1.035g/cc<br>Bright Green Polymer Spherical Microbeads
Product Line: UVPMS-BG-1.035
Fluorescent Green Polyethylene Microspheres Density 1.035g/cc
Bright Green Polymer Spherical Microbeads
[more info...]
Price: $103.95-$215.00


Fluorescent Red Polyethylene Microspheres Density 0.99g/cc Bright Fluorescent Red Particles 605nm Peak
Product Line: UVPMS-BR-0.995
Fluorescent Red Polyethylene Microspheres Density 0.995g/cc
Bright Fluorescent Red Particles 605nm Peak. Works well with Green Lasers.
[more info...]
Price: $103.95-$372.75


Fluorescent Red Polyethylene Microspheres Density 1.20g/cc Bright Fluorescent Red Particles 605nm Peak
Product Line: UVPMS-BR-1.20
Fluorescent Red Polyethylene Microspheres 1.20g/cc - Various Sizes 10um to 600um (0.6mm) [more info...]
Price: $103.95-$215.00


Fluorescent Red Polyethylene Microspheres Density 1.090g/cc<br>Bright Fluorescent Red Particles 605nm Peak.
Product Line: UVPMS-BR-1.090
Fluorescent Red Polyethylene Microspheres Density 1.090g/cc
Bright Fluorescent Red Particles 605nm Peak. Works well with Green Lasers.
[more info...]
Price: $103.95-$215.00


Fluorescent Red Polyethylene Microspheres Density 1.050g/cc<br>Bright Fluorescent Red Particles 605nm Peak.
Product Line: UVPMS-BR-1.050
Fluorescent Red Polyethylene Microspheres Density 1.050g/cc
Bright Fluorescent Red Particles 605nm Peak. Works well with Green Lasers.
[more info...]
Price: $103.95-$215.00


Density Marker Beads for use in Density Gradients
Price: $67.00-$450.00


Borosilicate Solid Glass Microspheres 2.2g/cc<br>Many Sizes 20micron to 6150mm
Product Line: BSGMS-2.2
Classified Grades of Borosilicate Solid Glass Microspheres 2.2g/cc
>90% spherical and >90% in size range. Particle Sizes Between 25micron and 6150um (6.2mm)
[more info...]
Price: $131.25-$313.95


300 Series Stainless Steel Microspheres
Product Line: SSMMS
Solid 304 Stainless Steel Metal microspheres supplied in dry powder form
>90% in particle size range. Sizes from 1um to 1200um (1.2mm)
[more info...]
Price: $103.95-$261.00


Fluorescent Yellow Microspheres Density 1.00g/cc for Flow Visualization and PIV<br>Bright Fluorescent Yellow-Green Particles with UV and Visible Illumination
Product Line: UVPMS-BY2-1.00
Fluorescent Yellow Microspheres Density 1.00g/cc for Flow Visualization and PIV
Bright Fluorescent Yellow-Green Particles with UV and Visible Illumination
[more info...]
Price: $103.95-$372.75


Fluorescent Yellow Microspheres Density 1.02g/cc for Flow Visualization and PIV<br>Bright Fluorescent Yellow-Green Particles with UV and Visible Illumination
Product Line: UVPMS-BY2-1.02
Fluorescent Yellow Microspheres Density 1.02g/cc for Flow Visualization
Bright Fluorescent Yellow-Green Particles with UV and Visible Illumination
[more info...]
Price: $215.00


Retroreflective Half-Shell Aluminum Coated Solid Glass Microspheres
Product Line: P2453BTA
Retroreflective Half-shell Aluminum Coating on Solid Barium Titanate Glass Microspheres
Density 4.1-4.5g/cc. Particle Size 30-100um. Uncoated, Silane and Fluorochemical Coatings
[more info...]
Price: $103.95-$557.00


Fluorescent Orange Polyethylene Microspheres Density 1.00g/cc<br>Spherical Bright Orange MicroBead Polymer Particles for Flow Visualization and PIV
Product Line: UVPMS-BO-1.00
Fluorescent Orange Polyethylene Microspheres Density 1.00g/cc
Spherical Bright Orange MicroBead Polymer Particles for Flow Visualization and PIV
[more info...]
Price: $103.95-$215.00


Fluorescent Orange Polyethylene Microspheres Density 1.015g/cc<br>Bright Orange Polymer Spherical MicroBeads
Product Line: UVPMS-BO-1.015
Fluorescent Orange Polyethylene Microspheres Density 1.015g/cc
Bright Orange Polymer Spherical MicroBeads
[more info...]
Price: $103.95-$215.00


Fluorescent Orange Polyethylene Microspheres Density 1.030g/cc<br>Spherical Polymer Particles Fluorescent in UV Light
Product Line: UVPMS-BO-1.03
Fluorescent Microspheres - Orange Polyethylene - Density 1.03g/cc and 1.04g/cc
Spherical Polymer Particles Fluorescent in UV Light
[more info...]
Price: $103.95-$215.00


Hollow Glass Microspheres - Density 0.14g/cc
Product Line: HGMS
Classified Grades of Hollow Glass Microspheres
Densities from 0.05 to 0.8g/cc
Sizes from 5um to 180um
[more info...]
Price: $103.95-$215.00


Blue Polyethylene Microspheres Density of 1.00g/cc <br>Spherical Particles for Flow Visualization and PIV
Product Line: BLPMS-1.00
Blue Polyethylene Microspheres 1.00g/cc - Density of Water
Neutrally-Buoyant Spherical Blue Particles for Flow Visualization and PIV
[more info...]
Price: $103.95-$372.75


Blue Polyethylene Microspheres Density 1.08g/cc<br>Bright Blue Polymer Spherical MicroBeads
Product Line: BLPMS-1.08
Blue Polyethylene Microspheres 1.08g/cc - Density of White Blood Cells
Bright Blue Polymer Spherical Microbeads for Validating and Troubleshooting Medical Devices
[more info...]
Price: $103.95-$372.75


Barium Titanate Solid Glass Microspheres and Spheres
Product Line: BTGMS
Classified Grades of Barium Titanate Solid Glass Microspheres - Density: 4.07-4.26g/cc - Sizes: 5um to 1000um (1.0mm) Index of Refraction: ~1.9 [more info...]
Price: $103.95-$261.00


Aluminum-Coated Solid Barium Titanate Glass Microspheres 4.2g/cc - 30-100um Diameter
Product Line: BTGMS-Al
Full Aluminum Coating (~500nm) on Solid Barium Titanate Glass Microspheres. Microspheres with high density and opacity offer a unique high-visibility solution to imaging in ultrasonic systems, optics and x-rays. [more info...]
Price: $131.25


Barium Titanate Solid Glass Microspheres 30-100 micron and 0.3-1mm Diameter
Product Line: BTGMS-B
Bulk Grades of Barium Titanate Solid Glass Microspheres - 4.05-4.25g/cc - Sizes: 30-100um and 0.3-1000um (1.0mm) - Index of Refraction: 1.9 [more info...]
Price: $52.50-$165.90


Orange Polyethylene Microspheres Density 1.00g/cc<br>Spherical Opaque Polymer Particles for Flow Visualization and PIV
Product Line: ORGPMS
Orange Polyethylene Microspheres
Density: 1.00g/cc, 1.015g/cc
Sizes: 20um to 1200um (1.2mm)
[more info...]
Price: $103.95-$215.00


Orange Polyethylene Microspheres Density 1.00g/cc<br>Spherical Opaque Polymer Particles for Flow Visualization and PIV
Product Line: ORGPMS-1.00
Orange Polyethylene Microspheres Density 1.00g/cc
Spherical Opaque Polymer Particles for Flow Visualization and PIV
[more info...]
Price: $103.95-$215.00


Orange Polyethylene Microspheres Density 1.00g/cc<br>Spherical Opaque Polymer Particles for Flow Visualization and PIV
Product Line: ORGPMS-1.015
Orange Polyethylene Microspheres Density 1.015g/cc
Spherical Opaque Polymer Particles for Flow Visualization and PIV
[more info...]
Price: $131.25-$215.00


Grey Polyethylene Microspheres Density 1.02g/cc<br>Spherical Opaque Grey Particles for Flow Visualization and PIV
Product Line: GRYPMS
Grey Polyethylene Microspheres Density 1.00g/cc, 1.02g/cc, 1.05g/cc
Applications for process control, diagnostics, pharmaceutical and medical device technology.
[more info...]
Price: $103.95-$372.75


Fluorescent Blue Polyethylene Polymer Microspheres, Particles, Beads<br>Density 1.13g/cc
Product Line: UVPMS-BB-1.13
Fluorescent Blue Polyethylene Polymer Microspheres - Density 1.13g/cc
Bright Blue UV Fluorescent Polymer Particles, Beads, Spheres
[more info...]
Price: $103.95-$215.00


Red Polyethylene Microspheres<br>Bright Red Spherical Polymer Microparticles
Product Line: REDPMS
Red Polyethylene Microspheres
Bright Red Spherical Polymer Microparticles
[more info...]
Price: $103.95


Red Polyethylene Microspheres Density 0.98g/cc<br>Bright Red Spherical Polymer Microparticles
Product Line: REDPMS-0.98
Red Polyethylene Microspheres Density 0.98g/cc
Bright Red Spherical Polymer Microparticles
[more info...]
Price: $103.95-$298.50


Red Polyethylene Microspheres Density 1.070g/cc<br>Bright Red Polymer Spherical Microparticles
Product Line: REDPMS-1.070
Red Polyethylene Microspheres Density 1.070g/cc
Bright Red Polymer Spherical Microparticles
[more info...]
Price: $103.95-$131.25


Red Polyethylene Microspheres Denstiy 1.080g/cc<br>Bright Red Polymer Spherical Microbeads
Product Line: REDPMS-1.080
Red Polyethylene Microspheres Denstiy 1.080g/cc
Bright Red Polymer Spherical Microbeads
[more info...]
Price: $103.95


Red Polyethylene Microspheres Density 1.065g/cc<br>Bright Red Polymer Spherical Microparticles
Product Line: REDPMS-1.065
Red Polyethylene Microspheres Density 1.065g/cc
Bright Red Polymer Spherical Microparticles
[more info...]
Price: $103.95


Red Polyethylene Microspheres Density 1.09g/cc<br>Bright Red Polymer Spherical Microbeads
Product Line: REDPMS-1.09
Red Polyethylene Microspheres Density 1.09g/cc
Bright Red Polymer Spherical Microbeads
[more info...]
Price: $103.95


Yttria Stabilized Zirconia Microspheres, Spherical Particles, Beads
Product Line: YSZMS/YSZS
Ceramic spheres and microspheres with very high strength, toughness, and excellent wear and impact resistance. [more info...]
Price: $99.00-$197.50


250nm Silver on PMMA Cores
Product Line: PMMAMS-AG
Conductive Silver-Coated Poly(Methyl Methacrylate) PMMA Microspheres 1.2g/cc-1.3g/cc - Classified Grades [more info...]
Price: $315.00-$348.50


Silver Coated PMMA Micorparticles 5-125um
Product Line: PMPMP-AG
Conductive Silver-Coated Poly(Methyl Methacrylate) PMMA Microparticles 1.4-3.3g/cc - Classified Grades [more info...]
Price: $99.00


Pink Polyethylene Microspheres Density 1.00g/cc<br>Pink (Magenta) Polymer Spheres for Flow Visualization and PIV
Product Line: PNKPMS-1.00
Pink Polyethylene Microspheres Density 1.00g/cc
Pink (Magenta) Polymer Spheres for Flow Visualization and PIV
[more info...]
Price: $103.95-$215.00


Gold-Coated Solid Glass Microspheres - High Density - Transparent Slightly Conductive Gold Coating on Glass Particles
Product Line: BTGMS-AU-4.49
Gold-Coated (~20nm coating thickness)
Solid Barium Titanate Glass Microspheres 4.49g/cc
Size range: 30-100um
[more info...]
Price: $293.48


Fluorescent Polymer Spheres (Green) 1.100g/cc density
Product Line: UVPMS-BG-1.100
Fluorescent green microspheres are designed with density of 1.100g/cc, ideal for simulating pollen dispersion.
Particles exhibit a strong fluorescent response and are color stable in solution.
[more info...]
Price: $215.00-$447.75


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Products 1-50 of 82

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About the Company:

Cospheric is a global leader in manufacturing and distribution of precision nanospheres, microspheres, and larger precision spherical particles. Scientists and engineers worldwide rely on us as a proven source to fulfill their needs for microparticles in narrow size ranges, wide selection of colors, densities, properties and formulations. We leverage our extensive technical expertise in micropowders to help each customer find an optimal microparticle solution for their needs. We ship worldwide daily out of our Santa Barbara, CA manufacturing facility.
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